Make sure that you smith all items AFTER receiving the task from Doric. Doing it beforehand will not count, thus you will be required to make them again.

1. Return to Doric and ask if he has any more tasks for you to do. He will tell you that sometimes he gets special commissions and today he has received one that he would like you to fulfill for him. His friend Santiri wishes to create a first generation black warhammer.
   
   
2. Travel to Keldagrim, the fastest route there is to use a Luck of the Dwarves to teleport there or to use the carts from the Grand Exchange or Taverley - Note that you must have been to Keldagrim at least once to use the carts. Once there, head the the North Western most building and speak to Santiri inside. You will explain that you are here on behalf of Doric and be instructed that your first step to the creation of the warhammer is to speak with the Supreme Commander of the Black Guard; you will receive a Task list for this section of the task and it will update as you progress.
   
   
   
   
3. Go into the building South of Santiri and climb the stairs to the second floor. Speak with the Supreme Commander and after a bit of discussion, he will give you a Black guard warhammer with the suggestion to hit it on an anvil. Take this to the building South of the Supreme Commander and use it on an anvil. Doing this will give you a Black guard warhammer (cracked) that you need to take to Santiri.
   
   
4. When you show him, he will complain that, at best, it is an 18th generation warhammer, not the 1st generation one he desires. Santiri will suggest talking to the librarian to see if there is something that can be done to improve the warhammer. The library is the North Eastern most building on the West side of the river, this is the 3rd building East of Santiri. Speak with the Librarian and he will suggest speaking with someone who is familiar with large stones.
   
   
5. Walk to the Southern most building on the Western side of the city and speak with the Stonemason. Though he says he doesn't know much about warhammers, he will permit you to use his stone crusher on it. Use the Black guard warhammer (cracked) on the stone crusher in the North Western corner of the building and you will obtain a Black guard warhammer (crushed). Take this back to Santiri and see what he thinks.
   
   
6. He will inform you that the warhammer is good for a 6th generation, but still isn't the 1st generation one he seeks. Asking him what more it needs to be perfect, he will inform you that it needs to be more corroded. Travel to the East side of Keldagrim and use the Black guard warhammer (crushed) on the well to create a Black guard warhammer (rusty). Return once again to Santiri to show him the warhammer.
   
   
7. Speak with him and he will compliment the work, then you will receive 12,000 Smithing experience and 36,000 charges on your Gofannon amulet.